Non-contact type position sensor

Details Non-contact type position sensor Non-contact type position sensor

2006-03-14

2006-03-14

Ledynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207150

Reexamination Certificate

active

07012422

ABSTRACT:
A non-contact type position sensor enhanced in characteristics. A first magnetic element has a first magnetic detecting part at one end side thereof. A first magnet has one pole thereof fixed to the other side of the first magnetic element. A second magnetic element is positioned underneath the first magnetic element, and has a second magnetic detecting part at one end side thereof, and has the other pole of the first magnet at the other end side thereof. A third magnetic element is positioned substantially on circles concentric with the first magnetic element, and has a third magnetic detecting part at the one end side thereof. A second magnet has one pole fixed to the other end side of the third magnetic element. A fourth magnetic element is positioned underneath the third magnetic element, and has a fourth magnetic detecting part at one end side thereof, and also has the other pole of the second magnet at the other end side thereof. A magnetic detecting element is positioned between the first and second magnetic detecting parts, and is positioned between the third and fourth magnetic detecting parts.

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Japanese Internatioanl Search Report for PCT/JP02/06078, dated Jun. 18, 2002.
European Search Report for EP 02 73 8755, dated Nov. 24, 2004.

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